Astudent studying the following pedigree states that the person #9 is homozygous for a dominant trait explain how she is able to determine this. : (.
a. because both the male and female members of this family display the trait.
b. because this trait appeared in every generation of the family.
c. because this persons children both male and female all have the trait
d. because this persons children all express the dominant trait even though her spouse is recessive for the trait